Process of crushing or dividing metal shavings or the like.



- .R. PHILIPP. PROGESS 0F CRUSHING 0R DIVIDING METAL SHAVINGS OR THELIKE.

APPLICATION FILED IEB.16, 1914.

Patented. Ma1n23, 1915.-

all/407111111111 Ill Ii" M I i r RICHARD PHILIPP, F ILMENAU, GERMANY.

PROCESS OF CRUSHING 0R DIVIDING METAL SHAVINGS OR THE LIKE.

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To all whom it may concern:

Be it known that I, RICHARD Pnimrr, a subject of the German Emperor,residing at Ilmenau, Thuringia, Germany, have invented certain new anduseful Improvements in Processes of Crushing or Dividing Metal IShavings or the like, of which the followin is a specification.

.he process of crushing metal shavings and waste forming the subject ofmy invention, is divided into two main stages. First, the metal shavingsare supplied to the crushing and reducing device, and second thecrushing process proper is effected by said device.

According to my invention, metal shavings are introduced into a charginghopper. where they are seized by a spindle therein,

and owing to the rotation of the spindle are provided in the shell orcasing of a stationa a I 35's how details ary hollow milling head, whichgrooves decrease indepth toward the outlet and in which the shavings areforced forward by the hollow milling head, and are seized and crushed,by't-he cutting edges of the said head as they emerge from the grooves.

Several constructions according to the in-' vention are illustrated byway of example in the accompanying drawing.

Figure 1 shows partly-in longitudinal section a crushing-device forcarrying out the process" of the present invention. Fig. 2 shows, 'alsopartly in longitudinal section, a slightly. modified construction, whileof the milling-headand its casing.

The shavingsand the waste produced by modern metal working machines,such as lathes, boring machines, punching machines and the like, whichfelt together in largemasses difficult to handle, are introduced intothe casing of the crushing device. in the construction shown-in Fig. l,the casing is formed by the hopper 1. in thelatter a spindle 2 rotates,said spindle being provided Specification of Letters Patent.

Patented llllar. 23, 1915.

with longitudinal ribs 3 which engage the shavings so that they wind ortwist about the said spindle and come into contact with the ribs 4 ofthe casing 1. Owing to the helical disposition of the ribs 4, theshavings are pushed toward the tapering lower portion of the hopper lwhence they pass into the crushing portion of the device. While beingpushed toward the narrow end of the casing, the shavings are compressedand partly crushedqand broken by the ribs of the spindle and of thecasing, so that they are already crushed, to a certain extent, duringtheir advance. The crushing process itself will be explained withreference to the device shown in Fig. in the latter, the easing 1 whichis cylindrical in its upper portion, is conical at the lower end, and isprovided in its interior with helical ribs l. The spindle 2 rotating inthe interior of the casing, is also provided with helical radial ribs 3which extend to the milling head 5 located at the lower end of thespindle within the shell or casing 9. The ribs 4: of the casing 1 taperdownward, and form conduits 6 which taper in cross-section and decreasein depth. The shavings enter the said conduits, and are forced forward,through the conduits, until they reach the milling head 5, and areseized by the cutting edges 7 of the latter andv crushed. in theconduits 6 holes 8 may be provided to afford outlet to sufficientlycrushed shavings, and at the same time take an active part in thereduction. If desired, the milling head 5 may also be provided withholes 8 (Fig. 4). The ribs 10 inthe casing 9 of the milling head,between which the conduits 6 are situated, have their upper endsarranged in a common plane so as to form an annular grate (Fig. 5) whichprevents large pieces of metal from reaching the milling head. Thesemetal pieces remain here, until they are subsequently removed, or untilthey are milled to such an extent that they can safely pass the millinghead.

While in the construction shown in Fig. 1, p

the milling or reducing head has practically a cylindrical shape, themilling head shown in Fig. 2, has the shape approximately of an invertedtruncated cone, and the milling head in Fig. 4 forms an uprighttruncated cone. The rotating part can be driven 'nany desired manner.

What I claim is:

l. lhe herein-described process of crash 5' duceand'partially crushsame; and finally subjecting the reduced and partiallyecrushed 'shavingsat thecompletion of their feeding movement and of their said preliminaryreduction to a milling action, to complete the 10 crushing.

2; The herein-described process of crush- Ling metalshavings whichconsists in feed .ingthe shavings in a spiral path and simultaneouslysubjecting them to'a preliminary 1 rubbing, cutting and" crushing actionof gradually increasing intensity to reduce and partially crushthefsame; and finally subjecting the reduced and partially crushedshavings at the completion of their feeding movement and of their saidpreliminary reduction to a milling action to complete the crushing.

3. The herein-described process of crushing'metal shavings whichconsists in causing the shavings to continuously move along a definitepath, in simultaneously subjectm the shavings during the greater part oftheir movement to a preliminary rubbing, cutting and crushing action toreduce and partially crush the same, and in finally subjecting thereduced and partially. crushed shavings during the remainder of theirmovement to a milling action, to complete the crushing.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses. i I

RICHARD PHILIPP.

Witnesses MARox PHILIPP,

ERNST EBERHARDT.

